Bridge and railroad-rail lock and signal.



` 910.852.959 PATDNTDD MAY 7, 1997.

. D. D. JOHNSTON.

BRIDGE AND RAILROAD NAIL LOOK AND SIGNAL.

APPLICATION FILED DEO.12,1906.

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TINTTBD STATES PATENT FFTE.

BRIDGE AND RAILROAD-RAUL LOCK AND SIGNAL.

Specification of Letters Patent.

Patented May '7, 1907.

Application filed December 12, 1906. Serial No. 347,417.

To a/ZZ whom t may concern.-

Beit known that I, EDWARD H. JOHNSTON, a citizen of the United States, residing in the city and county of Philadelphia, State of Pennsylvania, have invented a new and useful Bridge and Railroad-Bail Lock and Signal, of which the following is a specification.

My invention consists of a device adapted to lock a draw or movable bridge with an adjacent fixed section or approach and secure and laterally sustain the butt ends of railroad rails on said bridge and approach, while also operating a suitable signal so as to indicate the fully-closed position of the bridge and the safe condition of the same and of said rails as will be hereinafter described and the novel features pointed out in the claims.

Figure l represents a top or plan view of a bridge and railroad lock and connection for signal embodying my invention. Fig. 2 represents a transverse vertical section thereof on line :v Fig. 1. Fig. 3 represents a perspective view of a detached portion. Fig. 4 represents a vertical section of a modification of the lock. Y

Similar letters ofvreference indicate corresponding parts in the figures.

Referring to the drawings: A designates a portion of a draw bridge, and B designates the approach thereto at the open end thereof, these parts and the railroad rails C and D thereon being well known.

E designates a slidable or movable device for locking the butt ends of the rails respectively at the bridge and approach, the same consisting of the neck or upright member F, the cheek pieces G, and the base H, said pieces being formed on opposite sides of said base and said neck rising from one of said cheek pieces and the adjacent portion of said base.

On the bridge and approach respectively are chairs K and L, the same being bolted or otherwise firmly secured on ties on said parts and slidingly supporting the locking device E, it being seen that the rails C and D are supported on said chairs, the cheek pieces G embrace the bases of said rails and the neck F, rises at the outside of the rails so that its head is parallel or approximately so with the heads of the rails, it being evident that while the rails are firmly held in stationary position, the members of the lock are movable on those of the rails, as again hereinafter more fully referred to. Connected with the locking device is the rod M which is engaged by the lever N, the latter being mounted as at P, on a tie onthe floor of the bridge, whereby motions in opposite directions may be imparted to the lock. On the approach B is mounted the elbow or other shaped lever Q, the same having a limb adapted to be en gaged by the adjacent end of the locking device E, its other limb having connected vwith it the rod R which' leads to a signal, not necessarily shown as any form of the same may beused.

The bridge is shown closed in Fig. l, when it has engaged the abutment S on the approach B as its stop, it being seen that the locking device E is partly on the bridge and partly on the approach, and the butt ends of the opposite rails are both engaged by said device, the cheek pieces as has been stated embracing the bases of the rails and the neck E being on the outer sides of the rails and bridging the joint of the latter so as to form a continuity of the heads thereof, thus also reliably locking the bridge, while the butt ends of the rails are prevented from lateral motions and spreading. When the bridge is to be opened, the lever is operated to throw the locking device in the direction of arrow 2, when said device leaves the approach B and remains exclusively on the bridge, being withdrawn from the rails on the approach, while the lever Q occupies the position on the LPP /Vhen the bridge is vto be closed, it is swung to the position shown in Fig. l, when the lever N is operated to throw the looking device in the direction of arrow l, whereby the forward enl of said device shoots toward the approach and so again locks the butt ends of both sets of rails and consequently the bridge. As the device advances it bears against the lever Q and moves it so as to operate the conroach as shown in dotted lines Fig. l..

nected signal, thus setting the latter to indicate that the train may safely enter on the bridge and similarly pass to the approach. Before the wheels reach the joint at the butt ends of the rails, they pass upon the neck F which breaks and bridges said joint and provides a surface continuous of the heads of the rails, the effect of which is evident.

In Fig. 4, I show a modication of the lock where it is provided with upright members F and G, .adapted to pass under the head of the rail and so sustain the same from below, especially when loaded.

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Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is z* 1. A lock for a movable railroad bridge, consisting of a Slidable cheek piece, having a member adapted to freely engage the bases of the rails on the bridge, and the approach thereto, and a member occupying a position at the sides of said rails, closing the joint between the same in combination with a signal operating lever mounted on said approach, and having a limb adapted to be engaged by said cheek piece.

2. In a lock and Signal Jfor a movable railroad bridge, a movable cheek piece adapted to slidingly embrace the opposite ends of rails respectively on a bridge and an appreach thereto and a signal operating lever mounted on said approach and having a limb adapted to be positively operated by contact with said cheek piece.

3. A lock for a movable railroad bridge, consisting of a slidable rail engaging device composed of base, cheek pieces, and a neck, said base being adapted to pass freely under the rails of said bridge and approach thereto,

said cheek pieces to freely embrace the basesl of said rails, and said neck to occupy a position at the sides or' said rails and bridge the joint between the same in combination with a signal member adapted to be engaged and operated positively by said device.

EDWARD H. JOHNSTN. /Vitnesses JOHN A. WIEDERsnEiM, WM. CANER WIEDERSEIM. 

